ASTM D5430 PDF

You are on page 1of 1 Search inside document ASTM D 4-point system This system is mostly used in textile industry around the globe now. This test method describes a procedure to establish a numerical designation for grading of fabrics from a visual inspection. It may be used for the delivery and acceptance of fabrics with requirements mutually agreed upon by the purchaser and the supplier. This system does not establish a quality level for a given product, but rather provides a means of defining defects according to their severity by assigning demerit point values. All type of fabrics whether grey or finished, can be graded by this system.

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You are on page 1of 1 Search inside document ASTM D 4-point system This system is mostly used in textile industry around the globe now. This test method describes a procedure to establish a numerical designation for grading of fabrics from a visual inspection.

It may be used for the delivery and acceptance of fabrics with requirements mutually agreed upon by the purchaser and the supplier. This system does not establish a quality level for a given product, but rather provides a means of defining defects according to their severity by assigning demerit point values.

All type of fabrics whether grey or finished, can be graded by this system. No running yard shall be penalized more than 4 points for warp and weft defects. For Fabric width exceeding 64"", Maximum penalty points can be increased above 4 per linear yard in proportion to the width.

Defects appearing within one inch of either edge shall be disregarded. Any hole other than a pin hole shall be considered a major defect and assigned 4 points for penalty.

Grading: 1.

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Nappies and other sanitary items Toys and childcare products Types of Fiber Identification Tests Fiber identification is done through a variety of lab tests, depending on the fabrics used, the type of product and its purpose. Testing Fiber Strength and Durability Mechanical tensile tests and other physical testing methods are used to test the strength of samples, abrasion resistance, colorfastness, stitching strength, flammability, stiffness, and more. Chemical Tests Various chemical testing methods are used to detect fiber types and the treatments they underwent during production. Solubility tests on fibers reveal which chemical substances were used for processes such as tanning and dyeing. These are important to ensure that textiles meet the requirements of health and safety directives. Testing Fiber Authenticity Product labels, especially for clothes, shoes and other items that will come in close contact with the skin must contain accurate information about the composition of the materials used in the product. Natural and synthetic fibers must be differentiated and labeled as such, especially for leather, cotton, wool, silk, linen, nylon polyester and others.

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